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Field Exploratory Boring Log SB-4 <br /> M Blows/ Sample Well Depth Soil Group <br /> M <br /> b" Number Construction (ft) (USCS) Materials Description <br /> Concrete & base rock 0 to l' <br /> Clay (CL) <br /> Black(7 5 YR N2/0),moist,moderate plasticity,90%clay, <br /> 10% silt, <br /> @ 4' As Above-moist <br /> 5 <br /> 0 SB-4-6 5 <br /> 0 5B-4-115 10 <br /> @ 10' As Above- light olive brown (2 5Y 5/3), moist, <br /> 65%clay, 25% silt, 10% fine sand <br /> Clayey Sand(SC) <br /> Dark greenish gray (5GY 4/1),moist, 80% fine to medium sand, <br /> 4. SB-4-165 15 20% clay <br /> 54 SB-a-215 <br /> 20- Clay (CL) <br /> Brown to dark brown (10YR 413), moist, low plasticity,6017o clay, <br /> 30 silt, 10% fine sand <br /> Silt(ML) <br /> 856 SB-4-26 5 25 - Brown to dark brown(1 OYR 4/3), moist, 60%n Silt, 30 clay, <br /> 10%sand <br /> 73 <br /> SB-4-315 30 @ 30' As Above-moist Page 1 of 2 <br /> RI T <br /> BORING SHELL OIL PRODUCTS COMPANY Borehole Diameter 5 inches CAMBRIA <br /> Shell Service Station Logged by J Neely <br /> SB-4 6131 Pacific Avenue Driller Gregg Drilling <br /> Stockton, California <br /> Date Started 2-Jul-97 97374 <br /> Date Completed 2-Jul-97 <br />